diff --git a/src/keycloak/keycloak_admin.py b/src/keycloak/keycloak_admin.py
index a812318..88f54a3 100644
--- a/src/keycloak/keycloak_admin.py
+++ b/src/keycloak/keycloak_admin.py
@@ -87,21 +87,21 @@ class KeycloakAdmin:
     _connection = None
 
     def __init__(
-        self,
-        server_url,
-        username=None,
-        password=None,
-        token=None,
-        totp=None,
-        realm_name="master",
-        client_id="admin-cli",
-        verify=True,
-        client_secret_key=None,
-        custom_headers=None,
-        user_realm_name=None,
-        auto_refresh_token=None,
-        timeout=60,
-        connection: Optional[KeycloakOpenIDConnection] = None,
+            self,
+            server_url=None,
+            username=None,
+            password=None,
+            token=None,
+            totp=None,
+            realm_name="master",
+            client_id="admin-cli",
+            verify=True,
+            client_secret_key=None,
+            custom_headers=None,
+            user_realm_name=None,
+            auto_refresh_token=None,
+            timeout=60,
+            connection: Optional[KeycloakOpenIDConnection] = None,
     ):
         """Init method.
 
@@ -815,7 +815,7 @@ class KeycloakAdmin:
         )
         raise_error_from_response(data_raw, KeycloakPostError, expected_codes=[201])
         _last_slash_idx = data_raw.headers["Location"].rindex("/")
-        return data_raw.headers["Location"][_last_slash_idx + 1 :]  # noqa: E203
+        return data_raw.headers["Location"][_last_slash_idx + 1:]  # noqa: E203
 
     def users_count(self, query=None):
         """Count users.
@@ -1118,7 +1118,7 @@ class KeycloakAdmin:
         return raise_error_from_response(data_raw, KeycloakDeleteError, expected_codes=[204])
 
     def send_update_account(
-        self, user_id, payload, client_id=None, lifespan=None, redirect_uri=None
+            self, user_id, payload, client_id=None, lifespan=None, redirect_uri=None
     ):
         """Send an update account email to the user.
 
@@ -1339,7 +1339,7 @@ class KeycloakAdmin:
         )
         try:
             _last_slash_idx = data_raw.headers["Location"].rindex("/")
-            return data_raw.headers["Location"][_last_slash_idx + 1 :]  # noqa: E203
+            return data_raw.headers["Location"][_last_slash_idx + 1:]  # noqa: E203
         except KeyError:
             return
 
@@ -1965,7 +1965,7 @@ class KeycloakAdmin:
             data_raw, KeycloakPostError, expected_codes=[201], skip_exists=skip_exists
         )
         _last_slash_idx = data_raw.headers["Location"].rindex("/")
-        return data_raw.headers["Location"][_last_slash_idx + 1 :]  # noqa: E203
+        return data_raw.headers["Location"][_last_slash_idx + 1:]  # noqa: E203
 
     def update_client(self, client_id, payload):
         """Update a client.
@@ -2218,7 +2218,7 @@ class KeycloakAdmin:
             data_raw, KeycloakPostError, expected_codes=[201], skip_exists=skip_exists
         )
         _last_slash_idx = data_raw.headers["Location"].rindex("/")
-        return data_raw.headers["Location"][_last_slash_idx + 1 :]  # noqa: E203
+        return data_raw.headers["Location"][_last_slash_idx + 1:]  # noqa: E203
 
     def add_composite_client_roles_to_role(self, client_role_id, role_name, roles):
         """Add composite roles to client role.
@@ -2385,7 +2385,7 @@ class KeycloakAdmin:
             data_raw, KeycloakPostError, expected_codes=[201], skip_exists=skip_exists
         )
         _last_slash_idx = data_raw.headers["Location"].rindex("/")
-        return data_raw.headers["Location"][_last_slash_idx + 1 :]  # noqa: E203
+        return data_raw.headers["Location"][_last_slash_idx + 1:]  # noqa: E203
 
     def get_realm_role(self, role_name):
         """Get realm role by role name.
@@ -2851,7 +2851,7 @@ class KeycloakAdmin:
         )
 
     def _get_client_roles_of_user(
-        self, client_level_role_mapping_url, user_id, client_id, **params
+            self, client_level_role_mapping_url, user_id, client_id, **params
     ):
         """Get client roles of a single user helper.
 
@@ -3281,7 +3281,7 @@ class KeycloakAdmin:
             data_raw, KeycloakPostError, expected_codes=[201], skip_exists=skip_exists
         )
         _last_slash_idx = data_raw.headers["Location"].rindex("/")
-        return data_raw.headers["Location"][_last_slash_idx + 1 :]  # noqa: E203
+        return data_raw.headers["Location"][_last_slash_idx + 1:]  # noqa: E203
 
     def update_client_scope(self, client_scope_id, payload):
         """Update a client scope.
@@ -3650,7 +3650,7 @@ class KeycloakAdmin:
         )
         raise_error_from_response(data_raw, KeycloakPostError, expected_codes=[201])
         _last_slash_idx = data_raw.headers["Location"].rindex("/")
-        return data_raw.headers["Location"][_last_slash_idx + 1 :]  # noqa: E203
+        return data_raw.headers["Location"][_last_slash_idx + 1:]  # noqa: E203
 
     def get_component(self, component_id):
         """Get representation of the component.
diff --git a/tests/test_keycloak_admin.py b/tests/test_keycloak_admin.py
index e984023..8420bba 100644
--- a/tests/test_keycloak_admin.py
+++ b/tests/test_keycloak_admin.py
@@ -19,6 +19,8 @@ from keycloak.exceptions import (
     KeycloakPutError,
 )
 
+from src.keycloak import KeycloakOpenIDConnection
+
 
 def test_keycloak_version():
     """Test version."""
@@ -101,15 +103,26 @@ def test_keycloak_admin_init(env):
     admin.delete_realm(realm_name="authz")
 
     assert (
-        KeycloakAdmin(
-            server_url=f"http://{env.KEYCLOAK_HOST}:{env.KEYCLOAK_PORT}",
-            username=None,
-            password=None,
-            client_secret_key=None,
-            custom_headers={"custom": "header"},
-        ).token
-        is None
+            KeycloakAdmin(
+                server_url=f"http://{env.KEYCLOAK_HOST}:{env.KEYCLOAK_PORT}",
+                username=None,
+                password=None,
+                client_secret_key=None,
+                custom_headers={"custom": "header"},
+            ).token
+            is None
+    )
+
+    keycloak_connection = KeycloakOpenIDConnection(
+        server_url=f"http://{env.KEYCLOAK_HOST}:{env.KEYCLOAK_PORT}",
+        username=env.KEYCLOAK_ADMIN,
+        password=env.KEYCLOAK_ADMIN_PASSWORD,
+        realm_name="master",
+        client_id="admin-cli",
+        verify=True
     )
+    keycloak_admin = KeycloakAdmin(connection=keycloak_connection)
+    assert keycloak_admin.token
 
 
 def test_realms(admin: KeycloakAdmin):
@@ -960,8 +973,8 @@ def test_clients(admin: KeycloakAdmin, realm: str):
     )
     assert res
     assert (
-        admin.get_client_secrets(client_id=admin.get_client_id(client_id="test-confidential"))
-        == res
+            admin.get_client_secrets(client_id=admin.get_client_id(client_id="test-confidential"))
+            == res
     )
 
 
@@ -1136,12 +1149,12 @@ def test_realm_roles(admin: KeycloakAdmin, realm: str):
     ],
 )
 def test_role_attributes(
-    admin: KeycloakAdmin,
-    realm: str,
-    client: str,
-    arg_brief_repr: dict,
-    includes_attributes: bool,
-    testcase: str,
+        admin: KeycloakAdmin,
+        realm: str,
+        client: str,
+        arg_brief_repr: dict,
+        includes_attributes: bool,
+        testcase: str,
 ):
     """Test getting role attributes for bulk calls.
 
@@ -1489,8 +1502,8 @@ def test_client_roles(admin: KeycloakAdmin, client: str):
     )
     assert res == dict()
     assert (
-        len(admin.get_client_role_members(client_id=client, role_name="client-role-test-update"))
-        == 1
+            len(admin.get_client_role_members(client_id=client, role_name="client-role-test-update"))
+            == 1
     )
 
     roles = admin.get_client_roles_of_user(user_id=user_id, client_id=client)
@@ -1545,8 +1558,8 @@ def test_client_roles(admin: KeycloakAdmin, client: str):
     )
     assert res == dict()
     assert (
-        len(admin.get_client_role_groups(client_id=client, role_name="client-role-test-update"))
-        == 1
+            len(admin.get_client_role_groups(client_id=client, role_name="client-role-test-update"))
+            == 1
     )
     assert len(admin.get_group_client_roles(group_id=group_id, client_id=client)) == 1
 
@@ -2025,8 +2038,8 @@ def test_client_scopes(admin: KeycloakAdmin, realm: str):
     )
     assert res_update == dict()
     assert (
-        admin.get_mappers_from_client_scope(client_scope_id=res)[0]["config"]["user.attribute"]
-        == "test"
+            admin.get_mappers_from_client_scope(client_scope_id=res)[0]["config"]["user.attribute"]
+            == "test"
     )
 
     # Test delete mapper
@@ -2119,7 +2132,7 @@ def test_components(admin: KeycloakAdmin, realm: str):
             "name": "Test Component",
             "providerId": "max-clients",
             "providerType": "org.keycloak.services.clientregistration."
-            + "policy.ClientRegistrationPolicy",
+                            + "policy.ClientRegistrationPolicy",
             "config": {"max-clients": ["1000"]},
         }
     )
@@ -2238,8 +2251,8 @@ def test_auto_refresh(admin_frozen: KeycloakAdmin, realm: str):
         assert admin.connection.expires_at < datetime_parser.parse("2023-02-25 10:25:00")
         admin.connection.token = None
         assert (
-            admin.update_realm(realm_name="test-refresh", payload={"accountTheme": "test"})
-            == dict()
+                admin.update_realm(realm_name="test-refresh", payload={"accountTheme": "test"})
+                == dict()
         )
         assert admin.connection.expires_at > datetime_parser.parse("2023-02-25 10:25:00")
 
@@ -2310,7 +2323,7 @@ def test_update_required_action(admin: KeycloakAdmin, realm: str):
 
 
 def test_get_composite_client_roles_of_group(
-    admin: KeycloakAdmin, realm: str, client: str, group: str, composite_client_role: str
+        admin: KeycloakAdmin, realm: str, client: str, group: str, composite_client_role: str
 ):
     """Test get composite client roles of group.
 
@@ -2333,7 +2346,7 @@ def test_get_composite_client_roles_of_group(
 
 
 def test_get_role_client_level_children(
-    admin: KeycloakAdmin, realm: str, client: str, composite_client_role: str, client_role: str
+        admin: KeycloakAdmin, realm: str, client: str, composite_client_role: str, client_role: str
 ):
     """Test get children of composite client role.
 
@@ -2376,7 +2389,7 @@ def test_upload_certificate(admin: KeycloakAdmin, realm: str, client: str, selfs
 
 
 def test_get_bruteforce_status_for_user(
-    admin: KeycloakAdmin, oid_with_credentials: Tuple[KeycloakOpenID, str, str], realm: str
+        admin: KeycloakAdmin, oid_with_credentials: Tuple[KeycloakOpenID, str, str], realm: str
 ):
     """Test users.
 
@@ -2413,7 +2426,7 @@ def test_get_bruteforce_status_for_user(
 
 
 def test_clear_bruteforce_attempts_for_user(
-    admin: KeycloakAdmin, oid_with_credentials: Tuple[KeycloakOpenID, str, str], realm: str
+        admin: KeycloakAdmin, oid_with_credentials: Tuple[KeycloakOpenID, str, str], realm: str
 ):
     """Test users.
 
@@ -2453,7 +2466,7 @@ def test_clear_bruteforce_attempts_for_user(
 
 
 def test_clear_bruteforce_attempts_for_all_users(
-    admin: KeycloakAdmin, oid_with_credentials: Tuple[KeycloakOpenID, str, str], realm: str
+        admin: KeycloakAdmin, oid_with_credentials: Tuple[KeycloakOpenID, str, str], realm: str
 ):
     """Test users.
 
@@ -2503,8 +2516,8 @@ def test_default_realm_role_present(realm: str, admin: KeycloakAdmin) -> None:
     admin.realm_name = realm
     assert f"default-roles-{realm}" in [x["name"] for x in admin.get_realm_roles()]
     assert (
-        len([x["name"] for x in admin.get_realm_roles() if x["name"] == f"default-roles-{realm}"])
-        == 1
+            len([x["name"] for x in admin.get_realm_roles() if x["name"] == f"default-roles-{realm}"])
+            == 1
     )
 
 
@@ -2518,8 +2531,8 @@ def test_get_default_realm_role_id(realm: str, admin: KeycloakAdmin) -> None:
     """
     admin.realm_name = realm
     assert (
-        admin.get_default_realm_role_id()
-        == [x["id"] for x in admin.get_realm_roles() if x["name"] == f"default-roles-{realm}"][0]
+            admin.get_default_realm_role_id()
+            == [x["id"] for x in admin.get_realm_roles() if x["name"] == f"default-roles-{realm}"][0]
     )
 
 
@@ -2605,7 +2618,7 @@ def test_clear_user_cache(realm: str, admin: KeycloakAdmin) -> None:
 
 
 def test_initial_access_token(
-    admin: KeycloakAdmin, oid_with_credentials: Tuple[KeycloakOpenID, str, str]
+        admin: KeycloakAdmin, oid_with_credentials: Tuple[KeycloakOpenID, str, str]
 ) -> None:
     """Test initial access token and client creation.